Bread-slice greasing machine



Jan. 24, 1939.

w KING BREAD-SLICE- GREASING MACHINE Filed June 29, 1936 2 Sheets-Sheet l INVENTOR. WA 1.75 K N BY fir ATTORNEY.

Jan. 24, 1939. KIN 2,144,924

BREAD- SLI CE GREAS ING MACHINE Filed June 29, 1936 2 Sheets-Sheet 2 1NVEN TOR. WA LTER KIN G go l ngth, The discharge conveyor consistseoi' several end- 20 Patented Jan. V 24, 1939 UNITED STATES PATENT OFFICE 2,144,924 BREAD-SHOE GREASING MACHINE Walter King, San Francisco, Calif., asaignor to Langendort United Bakeries, Inc., San Franciaco, Calif., a corporation of Delaware Application June a9, 1936, Serial No. 87,962 4 Claims. (oi. 91-50) a This invention relates to the manufacture of with take-up boxes I, so that the belt may be kept bread toast on a commercial scale in which the in proper operative tension. bread slices are toasted between hot plates or dies Spaced outwardly in front of the discharge end carried on an endles conveyor through the oven. roll I is a curved sheet metal'guide plate 8 to The principal object of the invention is to proguide slices of bread 9 edgewise vertically down- 5 vide mechanical means for applying a coating of ward between this guide and a cooperating guide grease, oil, or other shortening or liquid preparaplate in for direction between a pair of spaced tions to opposite sides of each slice of bread just greasing rolls ll revolvably' mounted, each in a before it is introduced into the toasting die plates separate grease container or fountain l2 which to reduce the tendency of the toast to stick to the take the form of covered rectangular metal boxes 10 hot plates, aswell as to aid in securing an even between opposite ends of which rolls II are toasting effect and also enhance the flavor of mounted close to the upper confronting carriers the resulting toast. Other objects and advanso that the rolls project slightly beyond the vertages of the invention will appear in the followtical walls 01' their respective fountains to ening description and accompanying drawings. gage the bread slices as they fall th the 1 In the drawings, Fig. 1, is a side elevation of guides I and I0, and after passing between the the ma hine, greasing rolls the slices are guided to substan- Fig, 2 is 9, plan view of the machine proper, tialiy horizontal position by a plate i3 onto a but with its discharge conveyor shown broken in Slightly inclined discharge eyor Fig. 3 is an enlarged cross section of the greasless metal tapes ll carried over rollers l5 and I6 ing 11 i th grease fountains, at opposite ends supported on an extension frame Eg 4 is a plan view of one of t greasing l1, the outer end of which is supported on floor rolls and its fountain, with parts broken away legs I! and the outer roll i6 is preferably carto better indicate the flow of liquid grease. d in adjustable bearings I 9 or properly ten- 25 Fig. 5 is a partial side view of Fig. 2, looking similar the tapeshe s a e con eyo may in direction indicated by th arrow showing t deliver the greased slices of bread to the. toasting roll and conveyor drive. machine not shown.

Fig. 6 is an elevation partly broken away, showe grease coating the bread 811098 p pa aing the grease heating tank and pump. tory to toasting may be liquid oil or one such as 30 Before going into a detailed description of the 006011111? 011 butter other mixtures, fl o ed drawings, the. invention may be briefly described and/or seasoned. or not bu w ch n mally reas a machine provided with a belt conveyor which quire heating o render them sllfllciently fl d o delivers slices of bread in single layer to pass umpin and handl n in th r asin f untain. between a pair of greasing rolls running in a and to meet which conditions a relatively large 35 receptacle of warmed grease or oil in a manner grease Oil reservoir 20 is provided at the base to deposit a layer of the grease on both sides r of the machine and fitted inside with any desired each slice, and after which the slices are carried type of electrical heater 2| p eferably with laterally by another conveyor and dis harged thermostat control I for the grease 40 from the machine in melted condition and at any definite temper- 40 The features of importance are the arrangegigfi ii :i t gfi gg ggg g gi gg a 0 or ment or the coopemtmg members the mounting through means of a shaft 24 extending into the of the greasing rolls, the control of the liquid 1 m h uit bl rease and the associated details which makes reservor mug s a e l box pumps g the liquid fat or oil up through flexible pipes the results (metathe' 25, 25 respectively into cups 2'! which open each further detail. machine comprises through a fitting 28 into one of the fountains I2 mall? supporting frame with legs a and wherein the liquidismaintained at a certain hOnzontany amazed belt cqnveyor and at level by means of a baflle wall 29 over which it both sides 9 which is tablernke shelf Pref flows to a lower chamber and out'through flexible 50 erably with guard rail 4' at rear ge. and behose pipes 30 to drain back into the reservoir 20 tween which shelves he c nv y i positioned after first passing through'a removable strainer with the upper rim of its belt substantially flush 3| which serves to catch. bread crumbs getting supported by revolvably mounted rolls I and 6 into the oil from the slices of bread passing beat opposite ends and the latter preferably fitted tween the greasing rolls. Thegrease fountains l5 warm by means of suitable electric arranged against their hotmay be kept heating elements II tom walls.

The greasing rolls II are preferably of metal and have a knurled surface as indicated at H in Fig. 4 so that they will carry more oil and will also grip theslices of bread as they come along. Rolls I I, each roll in contact with a submerged oil supply roll 32 so arranged within the fountain that the "entering oil from fitting 23 must follow the path indicated in Fig. 3 to flow over baffle 29 and will therefore continually wash the crumbs from the surface of roll H as the bread slices pass.

To control the amount of grease or oil carried by rolls ii to the bread slices, each is provided with a knife blade or doctor 33 carried on a lever frame 34 pivoted at 35 to the end walls of the fountain, and which doctor may be ad- Justed toward or from roll II as by means of a screw 36 operating against a spring 31 normally pushing the outer end of frame 34 upward.

The fountains are pivoted ping to adjust the distance between the greasing rolls to suit the slice of bread, and are adjusted on their pivots as by thumb screws 39.

The conveyors, and the greasing rolls H, are

all preferably driven by the motor 23 which also drives the oil or grease pump by any suitable arrangement of gears, chains and sprockets, and here indicated as by a sprocket 40 on the motor, through chain 4| to a sprocket 42 on shaft 43 of discharge conveyor l4, thence from similar sprockets on this shaft by chain 44 over sprockets 45 to a sprocket 46 on shaft 41 of roll 5 of conveyor 3. Sprockets 45 are secured on the outer ends of axles 32' of the grease supply rolls 32 respectively and behind each sprocket is a gear 43 (Fig. 4) meshing with a gear 49 secured to the axle, ll" of a greasing roll II.

In operatic the machine is started by a suitable switch ii on an extension 52 of the motor circuit, and an operative to the left of the machine has a supply of bread slices piled on tables 4 and places them in single file upon conveyor 3 from which they are turned vertically by guides 3 and III to pass vertically to the greasing rolls I i' which gently squeeze the slices and draw the slices through while giving both sides a coat of grease, and after which the slice is turned by curved guide I3 and deposited flat on discharge conveyor l4 and carried away from the machine.

From the foregoing description of the machine and its mode of operation it will be evident to at 38 for bodily tipanyone skilled in the art that instead of the belts and rolls of the machine being of a width to handle but one bread slice after another, they may be wider so as to handle any number of slices side by side. Also that changes in the construction may be made within the spirit of the invention and scope of my appended I claim:

1. A machine of the character described comprising a table, an endless conveyor arranged substantially in the plane of the table and of a size to receive slices of bread lying flat thereon, guiding means at the discharge end of the conveyor arranged to turn the slices and drop them edgewise. a pair of greasing rolls arranged below the discharge end of said conveyor in a manner to receive the slices for passage between them, a laterally extending endless conveyor arranged below said rolls, means turning the slices after passing the rolls to flat position upon said laterally extending conveyor, means applying a layer of liquid grease to said rolls, and means for operating the conveyors and rolls.

2. In a bread slide greasing machine, a pair of spaced greasing rolls between which the bread slices pass to receive a coat of grease, a pair of spaced liquid grease reservoirs on which said rolls are respectively mounted for rotation and in overhanging relation to confronting sides of said reservoirs, means pivotally supporting at least one of said reservoirs on an axis parallel with but spaced from its greasing roll, and means for adjustably tilting the reservoir about said axis to vary the spacing of the greasing rolls.

3. In the construction as specified in claim 2 the surfaces of said greasing rolls being knurled to carry a heavier layer of grease.

4. Means for treating slices of bread comprising; means for moving the bread slices along a path of travel, means providing uniformly spaced opposed greasing surfaces at a predetermined point along said path for receiving said slices in the space therebetween and slightly compressing said slices to reduced substantially uniform thickness while said slices move along said path, a. supply of heated grease, and means for supplying heated grease from said supply to said surfaces whereby the slices of bread are simultaneously greased on opposite sides and means for conducting bread crumbs that may fall from said surfaces away from said surfaces and from said supply for maintaining said supply substantially free from crumbs.

' WALTER KING. 

